Is it difficult to converge a CFD problem with pressure inlet and pressure outlet boundary conditions ?

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Franco Concli

It should not be difficult at all. If it does not converge, maybe you should check the mesh and your settings.

Franco

Dinesh Dhande

Its not difficult. If u observe reverse flow errors at outlet faces don't worry it will not affect ur solution. In this case extend ur outlet upto few extent along length and the reverse flow error will disappear and solution will converge. But as Amit said, it will depend on set-up and boundary conditions which u have given.